{"id":"CVE-2020-6097","aliases":["DEBIAN-CVE-2020-6097","DLA-2820-1","EUVD-2020-27251","GHSA-g854-fc3p-gq33","UBUNTU-CVE-2020-6097","USN-6334-1","openSUSE-SU-2020:1736-1","openSUSE-SU-2024:10636-1"],"status":"published","title":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp...","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02154,"percentile":0.82289,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2020-09-10T14:13:17Z","modified":"2026-10-26T12:02:50Z","fixes":[{"ecosystem":"Debian:12","package":"atftp","fixed_in":["0.7.git20120829-3.2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"atftp","fixed_in":["0.7.git20120829-3.2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"atftp","fixed_in":["0.7.git20120829-3.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"atftp","fixed_in":["0.7.git20120829-3.1~0.16.04.1+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"atftp","fixed_in":["0.7.git20120829-3.1~0.18.04.1+esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"atftp","fixed_in":["0.7.git20120829-3.1ubuntu0.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 15.2","package":"atftp","fixed_in":["0.7.2-lp152.2.3.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.2"}]}]},{"source":"osv","ecosystem":"Debian:9","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~deb9u2"}]}],"versions":["0.7.git20120829-3","0.7.git20120829-3.1~deb9u1"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.16.04.1+esm1"}]}],"versions":["0.7.git20120829-2.1","0.7.git20120829-3.1~0.16.04.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.18.04.1+esm1"}]}],"versions":["0.7.git20120829-3","0.7.git20120829-3.1~0.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1ubuntu0.1"}]}],"versions":["0.7.git20120829-3.1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.16.04.1+esm1"}]}],"versions":["0.7.git20120829-2.1","0.7.git20120829-3.1~0.16.04.1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1~0.18.04.1+esm1"}]}],"versions":["0.7.git20120829-3","0.7.git20120829-3.1~0.18.04.1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.git20120829-3.1ubuntu0.1"}]}],"versions":["0.7.git20120829-3.1"],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.2","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.2-lp152.2.3.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"atftp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.5-1.1"}]}],"bundled":3}],"products":[{"vendor":"atftp_project","product":"atftp"},{"vendor":"debian","product":"debian_linux"},{"vendor":"opensuse","product":"leap"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1029","tags":["x_refsource_MISC","x_transferred","Exploit","Technical Description","Third Party Advisory","evidence","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00058.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://lists.debian.org/debian-lts-announce/2021/11/msg00014.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-6097"},{"url":"https://github.com/advisories/GHSA-g854-fc3p-gq33"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-6097","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-6097","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-6334-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-6097","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-41054","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-46671","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PPGJC4KDV5O45BCXYYD3DHEOMQTSWOLQ/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1176437","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2020-6097","tags":["web"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2019-11365","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-41054","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2020-6097","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2020-09-10T14:13:17Z","modified":"2024-08-04T08:47:41.028Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:35:52.592504Z"}],"euvd":[{"id":"EUVD-2020-27251","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2020-09-10T14:13:17Z","modified":"2024-08-04T08:47:41Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T03:08:04.192112Z"}],"ghsa":[{"id":"GHSA-g854-fc3p-gq33","title":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp...","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2022-05-24T17:27:51Z","modified":"2023-01-29T05:03:49Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:45:24.688971Z"}],"nvd":[{"id":"CVE-2020-6097","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2020-09-10T15:15:36.65Z","modified":"2026-06-17T03:22:40.95Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:06:14.981587Z"}],"osv":[{"id":"CVE-2020-6097","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2020-09-10T15:15:36.65Z","modified":"2026-03-14T10:32:16.215578Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"},{"id":"DEBIAN-CVE-2020-6097","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2020-09-10T15:15:36.65Z","modified":"2026-10-26T12:02:50.273185143Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:34.019707Z"},{"id":"UBUNTU-CVE-2020-6097","description":"An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability.","status":"published","published":"2020-09-10T15:15:00Z","modified":"2026-02-04T03:06:27.38322Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:25.179924Z"},{"id":"DLA-2820-1","title":"atftp - security update","status":"published","published":"2021-11-17T00:00:00Z","modified":"2026-03-09T01:22:39.877403Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"openSUSE-SU-2020:1736-1","title":"Security update for atftp","description":"This update for atftp fixes the following issues:\n\n- [boo#1176437, CVE-2020-6097] A specially crafted sequence of RRQ-Multicast requests can trigger an assert() call resulting denial-of-service.\n","status":"published","published":"2020-10-25T15:20:36Z","modified":"2026-02-04T02:28:45.921131Z","updated_at":"2026-11-02T16:58:31.517538Z"},{"id":"openSUSE-SU-2024:10636-1","title":"atftp-0.7.5-1.1 on GA media","description":"These are all security issues fixed in the atftp-0.7.5-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:23:47.713422Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"USN-6334-1","title":"atftp vulnerabilities","description":"Peter Wang discovered that atftp did not properly manage certain inputs. A\nremote attacker could send a specially crafted tftp request to the server\nto cause a crash. (CVE-2020-6097) \n\nAndreas B. Mundt discovered that atftp did not properly manage certain\ninputs. A remote attacker could send a specially crafted tftp request to\nthe server to cause a crash. (CVE-2021-41054) \n\nJohannes Krupp discovered that atftp did not properly manage certain\ninputs. A remote attacker could send a specially crafted tftp request to\nthe server and make the server to disclose /etc/group data.\n(CVE-2021-46671) \n","status":"published","published":"2023-09-04T10:25:21Z","modified":"2026-06-25T13:32:17.581593302Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}